jimbolada

I recently purchased a 2007 SL550. I have two keys but only one of the keys works with keyless go. the other key works in ignition and I can press buttons on key fob to unlock/lock, etc but does not work to open doors without pushing button or to get in car and just push start on the shifter. the other key works fine with everything. is there something I need to reprogram with the second key? I have not replaced batteries in second key yet since it works. nothing in the display about key or any messages. any help is greatly appreciated by this new SL owner.

Jim

wheatswake

fobs are most likely different part#s, one w/ KG and one w/o KG. nothing can be done if this is the case.

jimbolada

the two key fobs do have different 6 digit numbers printed on the end of them. is this an indication that one is keyless-go and one is not? are these cars delivered with one keyless-go key and one not keyless-go enabled?

thanks!

MikeJ65

Not sure on an '07, but I think key 1 was keyless go, key 2 was not. In any case, not many will still have the original 2 keys.

g0rsq

on my 2005 SL500 UK, both keys are keyless go.

You can probably check by removing the battery inside. Keyless only had one battery, non keyless had two batteries. I noted this when replacing the key case from china. Couldnt find the correct one for keyless, but outer body is the same.